function MM_openBrWindow(theURL,titleText,winName,winWidth,winHeight) { //v2.0
  var scrWidth=screen.width;
  var scrHeight=screen.height;

  var xPos=(scrWidth-winWidth)/2;
  var yPos=(scrHeight-winHeight)/2;

  var newwin=window.open(theURL,winName,'scrollbars=yes,width='+winWidth+',height='+winHeight+',left='+xPos +',top='+yPos);
}